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Which measure of central tendency would be used to summarize the wood color preference of 40 people

INSTRUCTIONS TO CANDIDATES
ANSWER ALL QUESTIONS

Project 1

Learn Unit 1 Chapters 1- 3.2

Directions: Part A : (20pts) Respond on your answer form to each of the following questions 1-10 (2 pts each )

1) After inspecting all of the of meat stored at the Willy Fry Sausage Company, it was found that 45,000 kg out of a total of 55,000 kg of the meat had spoiled. The 55,000 kg represents which one of the following:

A Statistic

B Stratified

C Parameter

D Random

2) The average height of all freshmen entering NCC is 68.4 in. Identify the number as either:

A Systematic

B Convenience

C Continuous

D Discrete

3) What is the most important criteria for a sample to be considered unbiased?

A Size

B Inferential

C Descriptive

D Representable 

4) One interval of a frequency table is determined to be 40 – 59. Find the midpoint for the interval.

A 49.0

B 49.5

C 48.5

D 50.5

5 The standard deviation of a distribution is found to be 9. What is the value of the variance?

A 3

B 9

C 81

D 12

6) The total number of phone calls a sales person makes in a month is 413. Identify the number 413 as either:

A Systematic

B Convenience

C Continuous

D Discrete

7) One interval of a frequency table is determined to be 16-20. Find the Class Boundaries for the interval.

A 16 - 20

B 15.5 – 20.5

C 16.5 – 20.5

D 15 - 21

8) If an income distribution is negatively skewed then, which measure of central tendency would be the largest.

A Mode

B Median

C Mean

D Range

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